问题 单项选择题

以下关于主题数据库和应用项目之间关系的描述中,错误的是()。

A.多个应用项目可以共同使用一个主题数据库

B.一个应用项目也可以使用多个主题数据库

C.一个主题数据库只能被一个应用项目使用

D.主题数据库一般应该独立于应用项目

答案

参考答案:C

解析:主题数据库设计得就尽可能地稳定,使能在较长时间内为企业的信息资源提供稳定的服务。稳定并非限制主题数据库水不发生变化,而是要求在变化后不会影响已有的应用项目的工作。主题数据库逻辑结构独立于硬、软件设备。主题数据库将企业数据划分为可管理的单位。

阅读理解

阅读短文,按要求完成各题。

Jane Goodall is one of the most well-known scientists in the world. Much of the information we have today about chimpanzees comes from the research of Jane Goodall.

Jane Goodall was born in London in 1934. She became interested in animals and animal stories when she was a very young child. She always dreamed of working with wild animals. When she was eleven years old, she decided that she wanted to go to Africa to live with and write about animals. But this was not the kind of thing young women usually did in the 1940s. Everybody was laughing except her mother. “If you really want something, you work hard, you take advantage of opportunity, you never give up, you find a way,” her mother said to her. The opportunity came at last. A school friend invited her to Africa. Jane worked as a waitress until she had got enough money to travel there.

In 1957, Jane Goodall traveled to Africa. She soon met the well-known scientist Louis Leakey and began working for him as an assistant. He later asked her to study a group of chimpanzees living by a lake in Tanzania. Very little was known about wild chimpanzees at that time.

Jane spent many years studying chimpanzees in this area of Africa. It was not easy work. They were very shy and would run away whenever she came near. She learned to watch them from far away using binoculars. Over time, she slowly gained their trust(信任). She gave the chimpanzees human names such as David Graybeard, Flo and Fifi. Watching the chimpanzees, she made many discoveries. They ate vegetables and fruits. But she found that they also eat meat. A few weeks later, she made an even more surprising discovery. She saw chimpanzees making and using tools(工具) to help them catch insects.

Jane Goodall has written many books for adults and children about wild chimpanzees. Her most recent book is called Hope for Animals and Their World. It tells about saving several kinds of endangered animals.

小题1:根据短文内容完成句子(每空限填一个单词)。

From the first two paragraphs we know Jane Goodall is a __________, and she had a special interest in ___________ when she was a young girl.

小题2:根据短文内容完成句子(每空限填一个单词)。

In order to __________ to travel to ___________, Jane Goodall once worked as a waitress.

小题3:把短文中划底线的句子译成汉语。

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小题4:根据短文内容回答问题。

What is Jane Goodall’s most surprising discovery?

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小题5:根据短文内容用一个完整的英文句子(限10个词以内)回答问题。

What is Jane Goodall famous for?

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判断题